.SearchButton{
    font-family: Ubuntu;
    color: #333;
    height: 3em;
    width: 3em;
    margin: 0;
    padding: 0;
    outline: 0;
    border: 0;
    background-color: rgba(256,256,256,0.5);
}
  
.SearchButton:hover {
    background-color: rgba(256,256,256,0.75);
}